This Buck Boost Regulator Uses Most Popular Lm 2596 and Xl6009 For Step Up And Step Down Respectively . This Dc-Dc Buck Boost Converter Is Capable of Supplying 1.25 - 35 Volts With 1.5 A Current

The CC (Constant Current ) & CV (Constant Voltage) Ability Makes This Chip Perfect For Small portable Power Supply . The Great Thing About This Diy Project is Its Cheap Cost And Portability it gives you freedom to test any electronics at remote locations.

that kind of power board is not available in my country... which of these boards can i use?

this one?https://www.google.com.ph/search?q=ltc3780+philippines&prmd=ivn&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjtytGn7pPTAhWGJZQKHdxuCLI4FBD8BQgFKAE&biw=360&bih=512#tbm=isch&q=150w+boost+converter&imgrc=BylQMLurUM29fM:

or this one?https://www.google.com.ph/search?biw=360&bih=290&tbm=isch&sa=1&ei=XFLoWNS9J4Hi0gTy96y4Cw&q=5-30v+boost+converter&oq=5-30v+boost+converter&gs_l=mobile-gws-img.3...190944.202527.0.202889.27.23.4.0.0.0.224.2506.11j9j2.22.0....0...1c.1j4.64.mobile-gws-img..1.14.1561.3..0j35i39k1j0i5i30k1j0i8i30k1j0i24k1j30i10k1.6jfUJrOvVB0#imgrc=v0TDbSC6kJbNBM: